Showing papers on "Winds aloft published in 2015"
TL;DR: The Uintah Basin in Utah, U.S.A. experiences high concentrations of ozone during some winters due to strong, multi-day temperature inversions that facilitate the buildup of pollution from local sources, including the oil and gas industry as discussed by the authors.
30 citations
TL;DR: This paper studied autumn morning flights in the northeastern United States to identify associations between the number of birds undertaking morning flights and the magnitude of nocturnal migratory movements and local topography.
Abstract: Many passerines that typically migrate at night also engage in migratory flights just after sunrise. These widely observed “morning flights” often involve birds flying in directions other than those aimed toward their ultimate destinations, especially in coastal areas. Morning flights have received little formal investigation, and their study may improve our understanding of how birds orient themselves during and after nocturnal movements and how they use stopover habitat. We studied autumn morning flights in the northeastern United States to identify associations between the number of birds undertaking morning flights and the magnitude of nocturnal migratory movements, nocturnal winds, and local topography. Our analyses included observations of more than 15,000 passerines at 7 locations. We found positive relationships between morning flight size and nocturnal migration density and winds aloft: Significantly more birds flew following larger nocturnal movements, quantified from weather surveillan...
22 citations
TL;DR: An exploratory study of CO 2 concentrations and fluxes was conducted during 2013, at a site 12 km North of Harare, Zimbabwe, where CO 2 measurements were made over four adjacent fields of differing surface vegetation.
11 citations
01 Jan 2015
TL;DR: In this paper, the authors describe the formation of Kal Boishakhi or nor'westers from a variety of mesoscale convective structures as they mature to meso α scale (200-1,000 km) systems.
Abstract: Thunderstorms of pre-monsoon season (March–May), locally known as “Kal Boishakhi” or nor’westers, develop from a variety of mesoscale convective structures as they mature to meso α scale (200–1,000 km) systems. These systems develop mainly due to merging of cold dry northwesterly winds aloft and southerly low level warm moist winds from the Bay of Bengal.